Gut gyp_chromium, common.gypi.

This change removes all of the code referencing gyp_chromium that
isn't needed to keep the closure_compilation builder working and/or
also needed for proper functioning of the gclient hooks.

R=brettw@chromium.org, dbeam@chromium.org
BUG=570091, 632206
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2355673003
Cr-Commit-Position: refs/heads/master@{#420182}

docs/ccache_mac.md

@@ -39,32 +39,6 @@ You can also just use the current released version of ccache (3.1.8 or 3.1.9)
 and disable the chromium style plugin with `clang_use_chrome_plugins=0` in your
 `GYP_DEFINES`.
 
-## Use with GYP
-
-We have to set two environment variables (`CC` and `CXX`) before calling
-`gclient runhooks` or `build/gyp_chromium`, given you are currently in the
-`chromium/src` directory:
-
-```shell
-export CC="ccache clang -Qunused-arguments"
-export CXX="ccache clang++ -Qunused-arguments"
-```
-
-Then run:
-
-```shell
-GYP_GENERATORS="ninja" ./build/gyp_chromium
-```
-
-or
-
-```shell
-GYP_GENERATORS="ninja" gclient runhooks
-```
-
-(Instead of relying on the clang/clang++ for building chromium in your `$PATH`,
-you can also use the absolute path here.)
-
 ## Use with GN
 
 You just need to set the use\_ccache variable. Do so like the following:

docs/profiling_content_shell_on_android.md

@@ -77,12 +77,6 @@ http://androidmuscle.com/how-to-enable-usb-debugging-developer-options-on-nexus-
 
 Rebuild `content_shell_apk` with profiling enabled.
 
-With GYP (deprecated):
-
-    export GYP_DEFINES="$GYP_DEFINES profiling=1"
-    build/gyp_chromium
-    ninja -C out/Release content_shell_apk
-
 With GN:
 
     gn args out/Profiling
@@ -197,8 +191,6 @@ Run the following:
 
 1.  If you don’t see chromium/webkit symbols, make sure that you built/pushed
     Release, and that the symlink you created to the .so is valid!
-1.  If you have symbols, but your callstacks are nonsense, make sure you ran
-    `build/gyp_chromium` after setting `profiling=1`, and rebuilt.
 
 ## Add symbols for the kernel