Make --force-fieldtrials not activate them in the browser process.

chrome/browser/search/search_unittest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_base.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/prefs/pref_service.h"
@@ skipping 133 matching lines @@
 #if defined(OS_IOS) || defined(OS_ANDROID)
   EXPECT_EQ(1ul, EmbeddedSearchPageVersion());
 #else
   EXPECT_EQ(2ul, EmbeddedSearchPageVersion());
 #endif
   ValidateMetrics(INSTANT_EXTENDED_OPT_IN);
 }
 
 TEST_F(InstantExtendedAPIEnabledTest, EnabledViaFinchFlag) {
   ASSERT_TRUE(base::FieldTrialList::CreateTrialsFromString(
-      "InstantExtended/Group1 espv:42/"));
+      "InstantExtended/Group1 espv:42/", false));
   EXPECT_TRUE(IsInstantExtendedAPIEnabled());
   EXPECT_EQ(42ul, EmbeddedSearchPageVersion());
   ValidateMetrics(INSTANT_EXTENDED_NOT_SET);
 }
 
 TEST_F(InstantExtendedAPIEnabledTest, DisabledViaCommandLineFlag) {
   GetCommandLine()->AppendSwitch(switches::kDisableInstantExtendedAPI);
   ASSERT_TRUE(base::FieldTrialList::CreateTrialsFromString(
-      "InstantExtended/Group1 espv:2/"));
+      "InstantExtended/Group1 espv:2/", false));
   EXPECT_FALSE(IsInstantExtendedAPIEnabled());
   EXPECT_EQ(0ul, EmbeddedSearchPageVersion());
   ValidateMetrics(INSTANT_EXTENDED_OPT_OUT);
 }
 
 class SearchTest : public BrowserWithTestWindowTest {
  protected:
   virtual void SetUp() OVERRIDE {
     BrowserWithTestWindowTest::SetUp();
     field_trial_list_.reset(new base::FieldTrialList(
@@ skipping 303 matching lines @@
 
   EXPECT_FALSE(DefaultSearchProviderSupportsInstant(profile()));
 }
 
 TEST_F(SearchTest, IsInstantCheckboxEnabledExtendedEnabledWithInstant) {
   // Enable instant extended.
   EnableInstantExtendedAPIForTesting();
 
   // Enable Instant.
   ASSERT_TRUE(base::FieldTrialList::CreateTrialsFromString(
-      "InstantExtended/Group1 allow_instant:1/"));
+      "InstantExtended/Group1 allow_instant:1/", false));
   ASSERT_TRUE(IsInstantCheckboxVisible());
 
   // Enable suggest.
   profile()->GetPrefs()->SetBoolean(prefs::kSearchSuggestEnabled, true);
 
   // Set an Instant URL with a valid search terms replacement key.
   SetDefaultInstantTemplateUrl(true);
 
   profile()->GetPrefs()->SetBoolean(prefs::kSearchInstantEnabled, true);
 
@@ skipping 71 matching lines @@
 
   // Now that suggest is back on and the instant url is good, the checkbox
   // should be enabled and checked again, but still invisible.
   EXPECT_FALSE(IsInstantCheckboxVisible());
   EXPECT_TRUE(IsInstantCheckboxEnabled(profile()));
   EXPECT_FALSE(IsInstantCheckboxChecked(profile()));
 }
 
 
 }  // namespace chrome