Allow use of EGL in browser tests with --use-gl=egl.

ui/gl/gl_switches.cc

Index: ui/gl/gl_switches.cc
diff --git a/ui/gl/gl_switches.cc b/ui/gl/gl_switches.cc
index d32786fd43c0be436455d38fb8488e93427ece38..3bf8e0be48354f2041d6eac1e50ccb875c9c6aff 100644
--- a/ui/gl/gl_switches.cc
+++ b/ui/gl/gl_switches.cc
@@ -60,22 +60,25 @@ const char kGpuSwitchingOptionNameForceDiscrete[]   = "force_discrete";
 // library first, but fall back to regular library if loading fails.
 const char kTestGLLib[]                     = "test-gl-lib";
 
+// Use hardware gpu, if available, for tests.
+const char kUseGpuInTests[] = "use-gpu-in-tests";
+
 // Disables GL drawing operations which produce pixel output. With this
 // the GL output will not be correct but tests will run faster.
 const char kDisableGLDrawingForTests[] = "disable-gl-drawing-for-tests";
 
-// Use hardware gpu, if available, for tests.
-const char kUseGpuInTests[] = "use-gpu-in-tests";
+// Forces the use of OSMesa instead of hardware gpu.
+const char kOverrideUseGLWithOSMesaForTests[] =
+    "override-use-gl-with-osmesa-for-tests";
 
 // This is the list of switches passed from this file that are passed from the
 // GpuProcessHost to the GPU Process. Add your switch to this list if you need
 // to read it in the GPU process, else don't add it.
 const char* kGLSwitchesCopiedFromGpuProcessHost[] = {
-  kDisableGpuVsync,
-  kDisableD3D11,
-  kEnableGPUServiceLogging,
-  kEnableGPUServiceTracing,
-  kGpuNoContextLost,
+    kDisableGpuVsync,                 kDisableD3D11,
+    kEnableGPUServiceLogging,         kEnableGPUServiceTracing,
+    kGpuNoContextLost,                kDisableGLDrawingForTests,
+    kOverrideUseGLWithOSMesaForTests,

[piman, 2014/05/01 20:55:35]

o_O

 };
 const int kGLSwitchesCopiedFromGpuProcessHostNumSwitches =
     arraysize(kGLSwitchesCopiedFromGpuProcessHost);