Disable SwiftShader when CPU doesn't have SSE2.

chrome/browser/component_updater/swiftshader_component_installer.cc

Index: chrome/browser/component_updater/swiftshader_component_installer.cc
diff --git a/chrome/browser/component_updater/swiftshader_component_installer.cc b/chrome/browser/component_updater/swiftshader_component_installer.cc
index 03b9482839f05bd254b37c9bb5b2bd1de57b2b77..c482ab4d4619de4d265097d707c9af48f600ac55 100644
--- a/chrome/browser/component_updater/swiftshader_component_installer.cc
+++ b/chrome/browser/component_updater/swiftshader_component_installer.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/base_paths.h"
 #include "base/compiler_specific.h"
+#include "base/cpu.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
@@ -211,6 +212,10 @@ void RegisterSwiftShaderPath(ComponentUpdateService* cus) {
 
 void RegisterSwiftShaderComponent(ComponentUpdateService* cus) {
 #if defined(ENABLE_SWIFTSHADER)
+  base::CPU cpu;
+
+  if (!cpu.has_sse2())
+    return;
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
       base::Bind(&RegisterSwiftShaderPath, cus));
 #endif