Change Android toolchain to GCC 4.9.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 349decf49a82242f6e8fd3ec7f97653359b7791f..d822fa7ea1f04d8ef6b47e6052b5813cb7b4d2c4 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1500,7 +1500,7 @@
         'conditions': [
           ['OS=="android"', {
             # We directly set the gcc versions since we know what we use.
-            'gcc_version%': 48,
+            'gcc_version%': 49,
           }, {
             'gcc_version%': '<!pymod_do_main(compiler_version target compiler)',
           }],
@@ -1646,7 +1646,7 @@
               'android_gdbserver%': '<(android_ndk_root)/prebuilt/android-x86/gdbserver/gdbserver',
               'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-14/arch-x86',
               'android_ndk_lib_dir%': 'usr/lib',
-              'android_toolchain%': '<(android_ndk_root)/toolchains/x86-4.8/prebuilt/<(host_os)-<(android_host_arch)/bin',
+              'android_toolchain%': '<(android_ndk_root)/toolchains/x86-4.9/prebuilt/<(host_os)-<(android_host_arch)/bin',
             }],
             ['target_arch == "x64"', {
               'android_app_abi%': 'x86_64',
@@ -1666,7 +1666,7 @@
               'android_gdbserver%': '<(android_ndk_root)/prebuilt/android-arm/gdbserver/gdbserver',
               'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-14/arch-arm',
               'android_ndk_lib_dir%': 'usr/lib',
-              'android_toolchain%': '<(android_ndk_root)/toolchains/arm-linux-androideabi-4.8/prebuilt/<(host_os)-<(android_host_arch)/bin',
+              'android_toolchain%': '<(android_ndk_root)/toolchains/arm-linux-androideabi-4.9/prebuilt/<(host_os)-<(android_host_arch)/bin',
             }],
             ['target_arch == "arm64"', {
               'android_app_abi%': 'arm64-v8a',
@@ -1680,7 +1680,7 @@
               'android_gdbserver%': '<(android_ndk_root)/prebuilt/android-mips/gdbserver/gdbserver',
               'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-14/arch-mips',
               'android_ndk_lib_dir%': 'usr/lib',
-              'android_toolchain%': '<(android_ndk_root)/toolchains/mipsel-linux-android-4.8/prebuilt/<(host_os)-<(android_host_arch)/bin',
+              'android_toolchain%': '<(android_ndk_root)/toolchains/mipsel-linux-android-4.9/prebuilt/<(host_os)-<(android_host_arch)/bin',
             }],
           ],
         },
@@ -3698,14 +3698,14 @@
                   }],
                   ['arm_thumb==1', {
                     'cflags': [
-                    '-mthumb',
-                    ]
+                      '-mthumb',
+                    ],
                   }],
                   ['OS=="android"', {
                     # Most of the following flags are derived from what Android
                     # uses by default when building for arm, reference for which
                     # can be found in the following file in the Android NDK:
-                    # toolchains/arm-linux-androideabi-4.8/setup.mk
+                    # toolchains/arm-linux-androideabi-4.9/setup.mk
                     'cflags': [
                       # The tree-sra optimization (scalar replacement for
                       # aggregates enabling subsequent optimizations) leads to
@@ -3713,14 +3713,9 @@
                       # compiler (r5-r7). This can be verified using
                       # webkit_unit_tests' WTF.Checked_int8_t test.
                       '-fno-tree-sra',
-                      # The following 6 options are disabled to save on
-                      # binary size in gcc 4.8.
+                      # The following option is disabled to improve binary
+                      # size and performance in gcc 4.9.
                       # TODO(fdegans) Reevaluate when we upgrade GCC.

[pasko, 2014/07/28 13:14:30]

nit:

I think there is no need to have a TODO for reevaluating anymore. Of course, we
will be re-evaluating, but the current state of things is not causing any
obvious difficulties any more.

If you still want to remain the TODO, please put a colon after the closing
paren.

[Fabrice (no longer in Chrome), 2014/07/28 13:40:43]

Done.

-                      '-fno-partial-inlining',
-                      '-fno-early-inlining',
-                      '-fno-tree-copy-prop',
-                      '-fno-tree-loop-optimize',
-                      '-fno-move-loop-invariants',
                       '-fno-caller-saves',
                       '-Wno-psabi',
                     ],
@@ -3757,11 +3752,6 @@
                           '-mthumb-interwork',
                           '-finline-limit=64',
                           '-fno-tree-sra',
-                          '-fno-partial-inlining',
-                          '-fno-early-inlining',
-                          '-fno-tree-copy-prop',
-                          '-fno-tree-loop-optimize',
-                          '-fno-move-loop-invariants',
                           '-fno-caller-saves',
                           '-Wno-psabi',
                         ],
@@ -5527,7 +5517,7 @@
       },
     }],
     # Don't warn about the "typedef 'foo' locally defined but not used"
-    # for gcc 4.8.
+    # for gcc 4.8 and higher.
     # TODO: remove this flag once all builds work. See crbug.com/227506
     ['gcc_version>=48 and clang==0', {
       'target_defaults': {