Fix integration tests in src/chrome and src/extensions so that we can turn on IO thread checks wi...

chrome/browser/extensions/extension_keybinding_apitest.cc

Index: chrome/browser/extensions/extension_keybinding_apitest.cc
diff --git a/chrome/browser/extensions/extension_keybinding_apitest.cc b/chrome/browser/extensions/extension_keybinding_apitest.cc
index be19bc2a2eff4cae21bae0527b3853f5e68d4803..b477aad57f949e75aebb220fe5daeda676a0524b 100644
--- a/chrome/browser/extensions/extension_keybinding_apitest.cc
+++ b/chrome/browser/extensions/extension_keybinding_apitest.cc
@@ -4,6 +4,7 @@
 
 #include "base/command_line.h"
 #include "base/macros.h"
+#include "base/threading/thread_restrictions.h"
 #include "build/build_config.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/extensions/active_tab_permission_granter.h"
@@ -558,6 +559,7 @@ IN_PROC_BROWSER_TEST_F(CommandsApiTest, MAYBE_AllowDuplicatedMediaKeys) {
 }
 
 IN_PROC_BROWSER_TEST_F(CommandsApiTest, ShortcutAddedOnUpdate) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir scoped_temp_dir;
   EXPECT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
   base::FilePath pem_path = test_data_dir_.
@@ -603,6 +605,7 @@ IN_PROC_BROWSER_TEST_F(CommandsApiTest, ShortcutAddedOnUpdate) {
 }
 
 IN_PROC_BROWSER_TEST_F(CommandsApiTest, ShortcutChangedOnUpdate) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir scoped_temp_dir;
   EXPECT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
   base::FilePath pem_path = test_data_dir_.
@@ -651,6 +654,7 @@ IN_PROC_BROWSER_TEST_F(CommandsApiTest, ShortcutChangedOnUpdate) {
 }
 
 IN_PROC_BROWSER_TEST_F(CommandsApiTest, ShortcutRemovedOnUpdate) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir scoped_temp_dir;
   EXPECT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
   base::FilePath pem_path = test_data_dir_.
@@ -697,6 +701,7 @@ IN_PROC_BROWSER_TEST_F(CommandsApiTest, ShortcutRemovedOnUpdate) {
 
 IN_PROC_BROWSER_TEST_F(CommandsApiTest,
                        ShortcutAddedOnUpdateAfterBeingAssignedByUser) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir scoped_temp_dir;
   EXPECT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
   base::FilePath pem_path = test_data_dir_.
@@ -747,6 +752,7 @@ IN_PROC_BROWSER_TEST_F(CommandsApiTest,
 
 IN_PROC_BROWSER_TEST_F(CommandsApiTest,
                        ShortcutChangedOnUpdateAfterBeingReassignedByUser) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir scoped_temp_dir;
   EXPECT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
   base::FilePath pem_path = test_data_dir_.
@@ -801,6 +807,7 @@ IN_PROC_BROWSER_TEST_F(CommandsApiTest,
 // Test that Media keys do not overwrite previous settings.
 IN_PROC_BROWSER_TEST_F(CommandsApiTest,
     MediaKeyShortcutChangedOnUpdateAfterBeingReassignedByUser) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir scoped_temp_dir;
   EXPECT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
   base::FilePath pem_path = test_data_dir_.
@@ -854,6 +861,7 @@ IN_PROC_BROWSER_TEST_F(CommandsApiTest,
 
 IN_PROC_BROWSER_TEST_F(CommandsApiTest,
                        ShortcutRemovedOnUpdateAfterBeingReassignedByUser) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir scoped_temp_dir;
   EXPECT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
   base::FilePath pem_path = test_data_dir_.