Set framework -install_name to rpath for EarlGrey and OCHamcrest.

ios/third_party/ochamcrest/ochamcrest.gyp

 # Copyright 2016 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.
 
 {
   'chromium_sources': 0,
   'targets': [
     {
       'target_name': 'OCHamcrest',
       'type': 'shared_library',
@@ skipping 212 matching lines @@
         'src/Source/Library/Text/HCSubstringMatcher.h',
         'src/Source/OCHamcrest.h',
       ],
       'xcode_settings': {
         'GCC_SYMBOLS_PRIVATE_EXTERN': 'NO',
         'USE_HEADERMAP': 'YES',
         'CLANG_ENABLE_ARC': 'YES',
         'CODE_SIGN_IDENTITY[sdk=iphoneos*]': 'iPhone Developer',
         'PRODUCT_BUNDLE_IDENTIFIER': 'org.hamcrest.OCHamcrest.OCHamcrest-iOS',
         'INFOPLIST_FILE': 'src/Source/OCHamcrest-Info.plist',
+        'DYLIB_INSTALL_NAME_BASE': '@rpath',
+        'OTHER_LDFLAGS': [
+          '-Xlinker', '-rpath', '-Xlinker', '@executable_path/Frameworks',
+          '-Xlinker', '-rpath', '-Xlinker', '@loader_path/Frameworks'
+        ]
       },
       'include_dirs': [
         'src',
         'src/Source',
       ],
       'mac_framework_dirs': [
         '$(SDKROOT)/../../Library/Frameworks',
       ],
       'link_settings': {
         'libraries': [
           'Foundation.framework',
           'UIKit.framework',
         ],
       },
     },
   ],
 }