Used use-gl=any instead of forcing osmesa for gpu browser tests.

This was committed as part of r105914, which was later reverted due to mysterious tsan failures. I am splitting the original patch into smaller chunks to figure out the failure.
Review URL: http://codereview.chromium.org/8347007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106113 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/gpu_browsertest.cc

@@ -33,40 +33,16 @@ class GPUBrowserTest : public InProcessBrowserTest {
   virtual void SetUpCommandLine(CommandLine* command_line) {
     InProcessBrowserTest::SetUpCommandLine(command_line);
 
-    EXPECT_TRUE(test_launcher_utils::OverrideGLImplementation(
-        command_line,
-        gfx::kGLImplementationOSMesaName));
+    // GPU tests require gpu acceleration.
+    // We do not care which GL backend is used.
+    command_line->AppendSwitchASCII(switches::kUseGL, "any");
 
     command_line->AppendSwitch(switches::kDisablePopupBlocking);
-
-#if defined(OS_MACOSX)
-    // Accelerated compositing does not work with OSMesa. AcceleratedSurface
-    // assumes GL contexts are native.
-    command_line->AppendSwitch(switches::kDisableAcceleratedCompositing);
-#endif
   }
 
   FilePath gpu_test_dir_;
 };
 
-#if defined(TOOLKIT_VIEWS)
-// Flaky on Windows (dbg): http://crbug.com/72608
-// For ChromeOS: http://crbug.com/76217
-#define MAYBE_BrowserTestCanLaunchWithOSMesa DISABLED_BrowserTestCanLaunchWithOSMesa
-#else
-#define MAYBE_BrowserTestCanLaunchWithOSMesa BrowserTestCanLaunchWithOSMesa
-#endif
-
-IN_PROC_BROWSER_TEST_F(GPUBrowserTest, MAYBE_BrowserTestCanLaunchWithOSMesa) {
-  // Check the webgl test reports success and that the renderer was OSMesa.
-  ui_test_utils::NavigateToURL(
-      browser(),
-      net::FilePathToFileURL(gpu_test_dir_.AppendASCII("webgl.html")));
-
-  EXPECT_EQ(ASCIIToUTF16("SUCCESS: WebKit WebGL"),
-            browser()->GetSelectedTabContents()->GetTitle());
-}
-
 // Test is flaky and timing out.  See crbug.com/99883
 IN_PROC_BROWSER_TEST_F(GPUBrowserTest,
                        DISABLED_CanOpenPopupAndRenderWithWebGLCanvas) {

chrome/browser/gpu_crash_browsertest.cc

@@ -35,17 +35,9 @@ class GPUCrashTest : public InProcessBrowserTest {
     EnableDOMAutomation();
     InProcessBrowserTest::SetUpCommandLine(command_line);
 
-    // OverrideGLImplementation and kDisableAcceleratedCompositing for
-    // OS_MACOSX are Taken verbatim from gpu_pixel_browsertest.cc and
-    // gpu_browsertest.cc.
-    EXPECT_TRUE(test_launcher_utils::OverrideGLImplementation(
-        command_line,
-        gfx::kGLImplementationOSMesaName));
-#if defined(OS_MACOSX)
-    // Accelerated compositing does not work with OSMesa. AcceleratedSurface
-    // assumes GL contexts are native.
-    command_line->AppendSwitch(switches::kDisableAcceleratedCompositing);
-#endif
+    // GPU tests require gpu acceleration.
+    // We do not care which GL backend is used.
+    command_line->AppendSwitchASCII(switches::kUseGL, "any");
   }
   virtual void SetUpInProcessBrowserTestFixture() {
     FilePath test_dir;

chrome/browser/gpu_pixel_browsertest.cc

@@ -109,25 +109,12 @@ class GpuPixelBrowserTest : public InProcessBrowserTest {
     // This enables DOM automation for tab contents.
     EnableDOMAutomation();
 
-    // These tests by default use OSMesa. This can be changed if the |kUseGL|
-    // switch is explicitly set to something else or if |kUseGpuInTests| is
-    // present.
-    if (command_line->HasSwitch(switches::kUseGL)) {
-      using_gpu_ = command_line->GetSwitchValueASCII(switches::kUseGL) !=
-          gfx::kGLImplementationOSMesaName;
-    } else if (command_line->HasSwitch(kUseGpuInTests)) {
-      using_gpu_ = true;
-    } else {
-      // OSMesa will be used by default.
-      EXPECT_TRUE(test_launcher_utils::OverrideGLImplementation(
-          command_line,
-          gfx::kGLImplementationOSMesaName));
-#if defined(OS_MACOSX)
-      // Accelerated compositing does not work with OSMesa. AcceleratedSurface
-      // assumes GL contexts are native.
-      command_line->AppendSwitch(switches::kDisableAcceleratedCompositing);
-#endif
-      using_gpu_ = false;
+    // These tests by default use any GL implementation it can find.
+    // This can be changed if the |kUseGL| switch is explicitly set to
+    // something or if |kUseGpuInTests| is present.
+    if (!command_line->HasSwitch(switches::kUseGL) &&
+        !command_line->HasSwitch(kUseGpuInTests)) {
+      command_line->AppendSwitchASCII(switches::kUseGL, "any");
     }
     // Allow file access from "file://" protocol. Otherwise, test fails with
     // "Uncaught Error: SECURITY_ERR: DOM Exception 18."
@@ -144,11 +131,6 @@ class GpuPixelBrowserTest : public InProcessBrowserTest {
     else
       generated_img_dir_ = test_data_dir_.AppendASCII("generated");
 
-    if (using_gpu_)
-      reference_img_dir_ = test_data_dir_.AppendASCII("gpu_reference");
-    else
-      reference_img_dir_ = test_data_dir_.AppendASCII("sw_reference");
-
     test_name_ = testing::UnitTest::GetInstance()->current_test_info()->name();
     const char* test_status_prefixes[] = {"DISABLED_", "FLAKY_", "FAILS_"};
     for (size_t i = 0; i < arraysize(test_status_prefixes); ++i) {
@@ -172,6 +154,7 @@ class GpuPixelBrowserTest : public InProcessBrowserTest {
   bool CompareImages(const SkBitmap& gen_bmp, const std::string& postfix) {
     // Determine the name of the image.
     std::string img_name = test_name_;
+    FilePath ref_img_dir;
     if (postfix.length())
       img_name += "_" + postfix;
 #if defined(OS_WIN)
@@ -183,21 +166,25 @@ class GpuPixelBrowserTest : public InProcessBrowserTest {
 #else
 #error "Not implemented for this platform"
 #endif
-    if (using_gpu_) {
-      GPUInfo info;
-      if (!GetGPUInfo(&info)) {
-        LOG(ERROR) << "Could not get gpu info";
-        return false;
-      }
+    GPUInfo info;
+    if (!GetGPUInfo(&info)) {
+      LOG(ERROR) << "Could not get gpu info";
+      return false;
+    }
+    // TODO(alokp): Why do we treat Mesa differently?
+    bool using_gpu = info.gl_renderer.compare(0, 4, "Mesa") != 0;
+    if (using_gpu) {
+      ref_img_dir = test_data_dir_.AppendASCII("gpu_reference");
       img_name = base::StringPrintf("%s_%s_%04x-%04x.png",
           img_name.c_str(), os_label, info.vendor_id, info.device_id);
     } else {
+      ref_img_dir = test_data_dir_.AppendASCII("sw_reference");
       img_name = base::StringPrintf("%s_%s_mesa.png",
           img_name.c_str(), os_label);
     }
 
     // Read the reference image and verify the images' dimensions are equal.
-    FilePath ref_img_path = reference_img_dir_.AppendASCII(img_name);
+    FilePath ref_img_path = ref_img_dir.AppendASCII(img_name);
     SkBitmap ref_bmp;
     bool should_compare = true;
     if (!ReadPNGFile(ref_img_path, &ref_bmp)) {
@@ -264,12 +251,9 @@ class GpuPixelBrowserTest : public InProcessBrowserTest {
   FilePath test_data_dir_;
 
  private:
-  FilePath reference_img_dir_;
   FilePath generated_img_dir_;
   // The name of the test, with any special prefixes dropped.
   std::string test_name_;
-  // Whether the gpu, or OSMesa is being used for rendering.
-  bool using_gpu_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuPixelBrowserTest);
 };