Set framework -install_name to rpath for EarlGrey and OCHamcrest.

For binary completeness with Xcode builds. This is also useful for running
TEST_HOST binaries outside of an xctest framework.

BUG=

Review-Url: https://codereview.chromium.org/1914253002
Cr-Commit-Position: refs/heads/master@{#390362}

ios/third_party/earl_grey/earl_grey.gyp

@@ -272,6 +272,11 @@
         'CODE_SIGN_IDENTITY[sdk=iphoneos*]': 'iPhone Developer',
         'BUNDLE_IDENTIFIER': 'com.google.earlgrey.EarlGrey',
         'INFOPLIST_FILE': 'src/EarlGrey-Info.plist',
+        'DYLIB_INSTALL_NAME_BASE': '@rpath',
+        'OTHER_LDFLAGS': [
+          '-Xlinker', '-rpath', '-Xlinker', '@executable_path/Frameworks',
+          '-Xlinker', '-rpath', '-Xlinker', '@loader_path/Frameworks'
+        ]
       },
       'link_settings': {
         'libraries': [

ios/third_party/ochamcrest/ochamcrest.gyp

@@ -230,6 +230,11 @@
         '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',

ios/web/ios_web_shell_tests.gyp

@@ -51,6 +51,10 @@
       },
       'xcode_settings': {
         'INFOPLIST_FILE': 'shell/test/Host-Info.plist',
+        'OTHER_LDFLAGS': [
+          '-Xlinker', '-rpath', '-Xlinker', '@executable_path/Frameworks',
+          '-Xlinker', '-rpath', '-Xlinker', '@loader_path/Frameworks'
+        ]
       },
       'dependencies': [
         'ios_web_shell_test_support',